Time evolution of thermal instabilities
作者:
D. Dobrott,
R. L. Miller,
John M. Rawls,
期刊:
Physics of Fluids(00319171)
(AIP Available online 1977)
卷期:
Volume 20,
issue 10
页码: 1744-1748
ISSN:0031-9171
年代: 1977
DOI:10.1063/1.861775
出版商: AIP
数据来源: AIP
摘要:
The steady‐state temperature profiles in a magnetically confined cylindrical plasma obtained by balancing Ohmic power input and thermal diffusion are shown to exhibit a bifurcation as a function of the applied electric field. A linear stability analysis predicts that the upper (high temperature) branch is unstable and that the lower branch is stable. These results agree with those of a transport code that uses the steady‐state profiles as initial conditions. The transport calculation reveals that the upper solution decays to the lower solution with a growth rate that is in agreement with the linear stability computation.
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